Let's clear something up. The Teal RP was not the original RP. Brunswick came out with 2 RP's (I think in 1992). One had a urethane cover and was light blue. The other was the first resin ball from Brunswick and was purple. Both were standard 2-piece lightbulb core construction, however, if I remember right had a shorter core than the Teal. I also think that the Purple was the first resin ball from a major manufacturer. The Turbo-X followed shortly thereafter.

The Teal RP followed a few months after the blue and purple versions.